I'm running a pretty much pencil profile stock Savage barrel on my 300. I use the magneto to do load work and then the occasional test to make sure I'm still running what I should be. It drastically changes poi in this rifle. Around 12" at 100m. I'd rather have my poi change, go back to zero when removed, and have an accurate speed than have a speed I'd be second guessing.
H1000 variance in powder or chrono?
- Thread starter jrock
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RockyMtnMT
Official LRH Sponsor
For us it has not been a factor in load work up. It most definitely changes the poi. Usually vertically. I have not noticed that it causes accuracy issues. Once have the data from load work up we just put the ms away and fine tune everything after that. If a load were to need seating depth adjustment for accuracy we would do that without the ms and then check vel after the load was tuned to make sure data is correct.
Other thing that is nice is we often are working with several rifles and it is easy to change from one to another even if there are others at the range.
I would like to get the Labradar for the down range data and the ability to capture more data as no shots need to be missed.
Steve
Steve,
So you do a load work up to find the maximum pressure and then just do accuracy testing after that? Once you found the accuracy you want, you verify velocity and call it good? I usually take 3 rifles and I've read a few reports that the MS is a pain in to move around.
So you do a load work up to find the maximum pressure and then just do accuracy testing after that? Once you found the accuracy you want, you verify velocity and call it good? I usually take 3 rifles and I've read a few reports that the MS is a pain in to move around.
RockyMtnMT
Official LRH Sponsor
I find much less painful than a sky screen chrono. The ms has taken doubt out of that part of the data for a load. Doubt is a killer when trying to figure this stuff out. It is hard enough whithout solid data.
Yes that is pretty much how I do it. I have to add that the fact our bullets require far less tuning than everything else makes it easier to do load work up.
Steve
Yes that is pretty much how I do it. I have to add that the fact our bullets require far less tuning than everything else makes it easier to do load work up.
Steve
true
RockyMtnMT
Official LRH Sponsor
Good to know about your experiences Steve. I'm surprised it isn't more problematic on the lighter barrels. I have such a resistance to it that I spent an hour or two researching the Labradar unit yesterday. Now that it's been in production for a while, I read mostly good results. I like that approach more so, even at the greater cost. If I needed to develop loads on a weekly basis, I would own one. Then test it against my current chronographs until I was convinced all systems were GO. Thanks for sharing on the MS uses.
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RockyMtnMT
Official LRH Sponsor
If you are interested in a Labradar wait till black friday. I was told they are going have a sale. They are allowing dealers to sell below map.
That's a nice tip. I saw all sellers had the same price. Figured the manufacturer had contract with retailers that prohibited any sale less than set value.
Wonder if Len has been informed. Maybe retailers can't speak to it. Who's gonna buy one now if they know they can wait until Nov. 25th and buy at a discounted price?
Is your source of info. solid/reliable. Versus a rumor. Guess you know I'm leaning toward Labradar...
Wonder if Len has been informed. Maybe retailers can't speak to it. Who's gonna buy one now if they know they can wait until Nov. 25th and buy at a discounted price?
Is your source of info. solid/reliable. Versus a rumor. Guess you know I'm leaning toward Labradar...
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Far too much is made of the supposed inaccuracy of optical chronographs. There are plenty of good ones out there, the competition electronics prochrono digital is one of them, that's what I use. I've got no experience with the F1 but have heard enough about them to avoid it. My prochrono digital is easy enough to check with my 6 BR. My 107 SMK load I use for 1000 yd shooting will be 2860 fps +/- 10 fps so long as it's between 50 and 75 degrees F. Until 10 minutes or so before sundown my prochrono will give me accurate numbers when I shoot that load across it.
I chronograph almost every shot when working up loads. I want to be able to chronograph while shooting for groups so the magnetospeed is out, I'm not going to shoot twice to get the data I need when I can do both in half the shots. It's just not necessary to do that to get accurate data. The Oehler 35P has long been the standard and the labradar looks nice, but if you're on a budget the prochrono will work fine. I don't get the fascination with a chronograph you have to hang off your barrel to get it to work, you just don't have to do that to get accurate numbers.
I chronograph almost every shot when working up loads. I want to be able to chronograph while shooting for groups so the magnetospeed is out, I'm not going to shoot twice to get the data I need when I can do both in half the shots. It's just not necessary to do that to get accurate data. The Oehler 35P has long been the standard and the labradar looks nice, but if you're on a budget the prochrono will work fine. I don't get the fascination with a chronograph you have to hang off your barrel to get it to work, you just don't have to do that to get accurate numbers.
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You can shoot groups just fine with the magneto. It just changes the location of the group. Take it off to zero the rifle and you're good.
Anything that changes the mass of your barrel is going to change the tuning of your loads. Assuming that something hanging off the end of the barrel is only going to change the point of aim and not affect the tuning is something you can't count on at all. Any accuracy testing should only be done the way you're going to be hunting.
RockyMtnMT
Official LRH Sponsor
I agree. I still spend less time and resources getting load development and drops done than I did before the magspeed. By quite a bit. When things are not lining up I can take out of the equation the vel part of the data. I now have one less variable to worry about. I think that the Labradar looks to be the best system that there is now.
Steve
